Dave Wakin wrote:
Can't the degree of chain stretch be measure by holding the chain horizontal
and measuring how many degrees it bends? I always thought that was the real
degree of chain stretch anyway, and this figure is kind of backed into by
the marks on cam and crank by measuring the length?
If this is the case, removeing the chain would show you how bad it is
without knowing the length, right?
Why not just measure chain wear the way Mercedes has outlined it (in TSB
05/93)? Line up the cam and cam tower marks and read the number off the
crank damper. The degrees of stretch is a VERY accurate measure of chain
wear. That doesn't require the engine to be disassembled and requires
less than one minute to accomplish when valves of an OM61x or earlier
engine are being adjusted. The amount of side flex of the chain does
correlate with chain wear, but I know of NO calibration scheme and I
sure don't feel like disassembling a group of engines with differing
amounts of chain stretch to determine how much flex related to allowable
amounts of chain wear.
Marshall
--
Marshall Booth (who doesn't respond to unsigned questions)
"der Dieseling Doktor" [EMAIL PROTECTED]
'87 300TD 182Kmi, '84 190D 2.2 229Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5
turbo 237kmi
